My thought is this: super well done as an alt-rock piece, skill is top notch.
pro: the intro I loved how gently the guitar kind of recalls a Japanese Samisen before stuff gets less soft.
con: my feel is this much energy on this piece, it would still be in this game but be like the -next- piece where maybe he gets back with his remaining friends and says "ok she's gone. We need to honor her and persevere, let's pick up and -Go!-"
but: i profess my ignorance as I'm not a native Kingdom Hearts player from back in the Day when the game was new..., I'm an old, lol, series is after my time.
But I -loved- the piece. Nice work!